Clearing the browser cache from afar is pretty hard. You ship a bad version of an asset, and aside from phoning all your users and asking them politely to clear their cache, what can you do? Turns out this is way more nuanced and complex than you might think.

Andrew Betts

Principal developer advocate at Fastly, member of W3C Technical Architecture Group and co-chair of London Web Performance

RFC 7540 was ratified over 2 years ago and, today, all major browsers, servers, and CDNs support the next generation of HTTP. Just over a year ago, at Velocity (https://www.slideshare.net/Fastly/http2-what-no-one-is-telling-you), we discussed the protocol, looked at some real world implications of its deployment and use, and what realistic expectations we…